Question about Computers & Internet
How did you determine the power supply is fully functional? Just because the system comes on when you press the power switch, or jumper the "turn-on" pin in the plug to ground, it doesn't mean the outputs are correct. The only sure test of whether the supply is causing problems is to substitute a known good supply as a test.
That said, if the power supply really is good, all that's left is the system board. I have replaced many motherboards that fire up the power supply when you press the power button, but that's all. Take a close look at the filter capacitors on the board, and you might see some that have bulgy or split tops. They are a common source of problems when they go bad. Sometimes you can repair a board by changing out the bad parts, but it's usually more cost-effective just to replace the board. You can often find the original board on eBay these days, or you can purchase a new board that uses the same processor and memory and fits the case.
Posted on Dec 29, 2010
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Posted on Jan 02, 2017
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